RALEIGH, N.C. — Former CIA Director David Petraeus, whose once-bright political future was all but destroyed over an affair with his biographer, has agreed to plead guilty to charges he shared classified material with her for her book.

The plea agreement — which carries a possible sentence of up to a year in prison — represents another blow to the reputation of the retired four-star Army general who led American forces in Iraq and Afghanistan and was perhaps the most admired military leader of his generation.

CHICAGO — U.S. Sen. Dick Durbin said Sunday that he will seek an investigation into how a contract employee was able to sabotage a regional control center and bring Chicago’s two international airports to a halt.

FERGUSON, Missouri — Authorities searched Sunday for two men suspected of shooting and wounding a police officer in Ferguson, Missouri, the St. Louis suburb where there have been angry protests since a white officer fatally shot an unarmed 18-year-old black man last month.

Although there were two separate protests about the Aug. 9 shooting of Michael Brown happening around the time the officer was shot Saturday night, St. Louis County Police Chief Jon Belmar said he didn’t think they were related in any way to the attack on the officer.

WASHINGTON — President Barack Obama acknowledged that U.S. intelligence agencies underestimated the threat from Islamic State militants and overestimated the ability and will of Iraq’s army to fight.

Questioning Obama’s strategy to destroy the group, House Speaker John Boehner said the U.S. may have “no choice” but to send in American troops if the mix of U.S.-led airstrikes and a ground campaign reliant on Iraqi forces, Kurdish fighters and soon-to-be trained Syrian rebels fails to achieve that goal.

BALTIMORE — In late-breaking news from the 19th century, there’s been a cannon recall.

The National Park Service said in a release that an iron reproduction historic cannon exploded during a celebratory firing Sept. 16 at Fort McHenry in Baltimore, launching a 100-pound mound of metal on the cannon’s rear more than 300 feet afield and sending some other debris even further.

BOSTON — A renowned technology hub that is home to some of the country’s top universities, Boston is emerging as an unlikely battleground for web-based businesses like Airbnb and Uber, with some saying more regulations are needed to prevent the upstarts from disrupting communities and more established industries.

CANADENSIS, Pa. — The delicate search for a survivalist charged with killing a trooper more than two weeks ago shifted slightly over the weekend in the dense woods that authorities fear may be booby-trapped, state police said Sunday.

Trooper Adam Reed said the search area in the Pocono Mountains largely remains the same as the past two days but has moved slightly to the southeast.

Police are constantly following up on information they receive, Reed said. He declined to go into specifics about why the shift occurred or what new information police may have.

WASHINGTON — Should the company that supplies your Internet access be allowed to cut deals with online services such as Netflix, Amazon or YouTube to move their content faster?

The Federal Communications Commission is tackling that question this fall after the public submitted a record 3.7 million comments on the subject — more than double the number filed with the regulatory agency after Janet Jackson’s infamous wardrobe malfunction at the 2004 Super Bowl.

WASHINGTON — Attorney General Eric Holder was just months into the job when he announced plans to prosecute the accused mastermind of the Sept. 11 attacks and other alleged co-conspirators in a New York courtroom, rather than through the Guantanamo Bay military commission process.

It was an audacious idea, but immediately beset by political opposition and public safety concerns. The Obama administration’s eventual decision to walk away from the proposal was a stinging defeat for Holder — and a vivid reminder of the complexities of the legal fight against terrorism.